Modeling of the composition of ecologically safe clay-gypsum binders

Asamatdinov, Marat; Medvedev, Andrey; Zhukov, Aleksey; Zarmanyan, Ervand; Poserenin, Alexey

doi:10.1051/matecconf/201819303045

Cited by 14 publications

(7 citation statements)

References 5 publications

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“…The main problem when performing plastering work on vertical surfaces is a preliminary determination of the absence of runoff (slipping) of mortar mixes at various thickness of the applied layer. The assessment of such technological factors is implemented empirically [15][16][17][18]. A theoretical design solution is possible and based on the formula:…”

Section: Methodsmentioning

confidence: 99%

Composition and rheological characteristics of plaster mixtures

et al. 2019

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The applying of local building materials is an effective contribution to the savings of mineral resources, which are used for the production of basic building materials. Clay and gypsum compositions are the local raw materials in many regions of the country and some neighboring countries. The article discusses the method for determining the clay fraction in the clay and gypsum composition, as well as the method for assessing the rheological characteristics of the plaster mixtures for interior work based on clay and gypsum binder. It was established that the content of the clay fraction in the studied clay and gypsum composition is in the range of 30–32%. Plaster mixtures based on clay and gypsum binder can be considered as optimal compositions under the following conditions. The grade of mobility is not less than PK3 (8–12 cm) in cone penetration test, the ultimate shear stresses in the first seconds of the thixotropic hardening ensure no runoff for the adjusted thickness of the applied layer. With the mentioned mobility, the “creeping” on the concrete surface is 10% and less, and the “creeping” on the brick surface is no more than 5%. The allowable water-solid ratio is 0,46–0,50.

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Section: Methodsmentioning

confidence: 99%

Composition and rheological characteristics of plaster mixtures

et al. 2019

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“…Later gypsum-cement-puzzolanic (GCP) and gypsum-slag-cement-pozzolanic (GSCP) binders were created and comprehensively studied, new technologies were developed for obtaining waterproof gypsum binders. CGB -composite gypsum binders and WGLWwaterproof gypsum binders of low water demand [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Gypsum polymer materials in construction

et al. 2021

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The modern level of technological development involves the use of traditional materials modified with additives of various types and functional purposes, as well as composite materials allowing to obtain a product with improved properties. Expanding the area of application of products based on gypsum for facade systems involves the creation of weather-resistant, and, first of all, waterproof materials based on gypsum polymers. The purpose of the experiment, the results of which are presented in the article, was to assess the possibility of using polycondensation polymers as a component of gypsum polymer, to model the properties of the material and to evaluate its characteristics as a result of climatic and humidity influences. The modeling and optimization of gypsum polymer properties were based on statistical methods as well as methods of mathematical analysis of functions of several variables. The assessment of the water resistance of gypsum polymer samples was carried out under test conditions in an open reservoir with an almost unlimited reaction capacity of the medium. The weather resistance was checked according to the results of tests in a climatic chamber. Experiments have shown that the strength of samples with 20% modified melamine-formaldehyde resin in compression and in bending for 80 days of storage in air increases by 30% and 25%, respectively. The compressive strength is 60 MPa, and the flexural strength is 12 MPa. Gypsum polymer has high frost resistance up to 150 cycles of alternate freezing and thawing. The result of the research was the confirmation of the possibility of using polycondensation resins and the foundations of the method for selecting the composition of the gypsum polymer were developed. The results obtained can be used in the development of the technology of gypsum polymer products, and, in particular, piece products (building cladding tiles).

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“…Interest in this material is now returning. Its use is supported by low production costs, large re-serves, non-energy-intensive processing technology, and properties that meet regulatory requirements [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Modified gypsum binder for interior systems

et al. 2021

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As the main component for many interior plaster mixes, a natural gypsum binder or its analogues is used, which are products of processing of local raw materials or by-products of other industries. Under operating conditions, gypsum binder-based plaster coatings have two main features. The first is the ability to regulate room humidity and absorb harmful emissions. The second is the ability to implement the function of barrier protection in the event of a fire. Improving the quality of plastering works and optimizing their cost is associated with the development of modified compositions based on gypsum, justified use of waste and local building materials, which include clay-gypsum binder. Clay gypsum as a natural material of sedimentary origin is widespread both in Russia and in the states formed in the post-Soviet space. In terms of energy intensity and manufacturability, the processing of raw materials into a clay-gypsum binder does not differ from the conditions of traditional processing of natural gypsum. Compared to lime or cement mortars, mortars based on gypsum binder have greater elasticity and plasticity. Such properties associated with the manufacturability of the application, such as workability and thixotropy, as well as the interval for maintaining the pot life of the mixture, are controlled by the introduction of modifying additives, the evaluation of the formulation of which was the purpose of the research, the results of which are presented in the article. The studies carried out have established that varying the recipe parameters make it possible to regulate both the strength and performance characteristics of mixtures based on gypsum plaster, as well as the manufacturability of their application.

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Modeling of the composition of ecologically safe clay-gypsum binders

Cited by 14 publications

References 5 publications

Composition and rheological characteristics of plaster mixtures

Composition and rheological characteristics of plaster mixtures

Gypsum polymer materials in construction

Modified gypsum binder for interior systems

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